Veterinary parturition-instrument



(No Model) A. P. SHEARBURN.

VETERINARY PARTURITION INSTEUMENT. No. 411,621. Patented Sept. 24',1889.

UNITED. STATES PATENT OFFICE.

ARTHUR P. SHEARBURN,

,OF MENDOTA, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 411,621, datedSeptember 24, 1889.

Application filed June 12, 1839. $erial No. 3 l (N0 del) To all whom itmay concern.-

Be it known that I, ARTHUR P. SHEARBURN, of Mendota, in the county of LaSalle, and in the State of Illinois, have invented certain new anduseful Improvements in Veterinary Parturition-Instruments; and I dohereby declare that the following is a full, clear, and exactdescription thereof.

My invention relates to veterinary parturition-instruments; and itconsists in certain peculiarities of construction, as will be fully setforth hereinafter and subsequently claimed.

In the drawings, Figure 1 is a side or end view of my improved device,partly in section. Fig. 2 is a plan view of the same, likewise partly insection. Figs. 3 and at are detail views on the lines 3 3 and 4 4 ofFig. 2.

A represents the operating-rod of my device, havinga handle B at one endand a grooved and apertured guide-block G at the other end. This block 0consists, primarily, of a disk a and a neck or shank terminating in adisk I), of less diameter than said disk a which latter is provided withfour holes 0 c c 0, while the neck-disk b has four grooves 0r notches at(Z (Z d in line therewith, and the said block is further provided withalongitudinal central perforation c to receive the end f 0f the rod A,which end maybe screw-threaded, as shown, to fit in correspondingscrewthreads formed in the walls of the perfora- (ion (2; or the rod Amaybe shouldered at the end f and the extreme end projected beyond thesurface of the disk at and upset, so as to secure the said rod and blockfirmly together.

D D represent two pear-shaped wire loops, whose outer operative endsstand somewhat apart, normally, as indicated in Fig. 1, while theirinner ends g g are brought parallel to each other and pass through theholes 0 c in the disk a and along the grooves or notches d cl in theneck b of the block 0, and thence pass back (forming the four corners ofa rectangle, whose center is the rod A) and through similarly-disposedholes h h and it in a crosspiece E, (which is preferablya section oftubing, as shown, though it may be solid, if desired,) and are thenupset, as shown as j j. This crosspiece or tube E is further perforated, as shown at k, for the free passage therethrough of the rod A,and a plate F, provided with a corresponding perforation m for said rod,is placed against the cross-piece E (and against the upset ends j j ofthe wire ends 9 g of the loops D) and secured to said cross-piece, as byscrews 71 or entering suitable holes and sockets in said plate F andcross-piece E.

My device is more especially adapted for aiding sows in giving birth totheir young, and in use the cross-piece E and block 0 are drawn towardeach other and the extricatingloops D D of the instrument (in theposition shown in Fig. 1) inserted in the animal, so that one loop Dwill pass on each side of the young pig, and then the device is turnedonequarter around, (to the position shown in Fig. 2,) so that one loop Dmay be above and one loop D below the shoulder of the young animal, andthen by drawing the cross-piece E and handle B toward each other theblock C will move toward the said loops D and draw them together,securing the young animal firmly between them and enabling the same tobe'easily delivered by simply withdrawing the instru mentand without anyinjury to the young animal or the mother.

By reason of the described construction, should one of the loops becomebroken or injured, the plate F can be quickly removed and the injuredpart replaced by another without loss of or damage to the rest of theinstrument.

I am aware of spoon-shaped single-loop instruments for a similarpurpose; but the construction of mypresent device insures greater easeand certainty of operation with less liability of injury to the motheror young than is possible in any such single-loop or spoon device.

Having thus described my invention, whatI claim as new, and desire tosecure by Letters Patent, is

1. In a veterinary parturition instru1nent, the combination of twoopposing and normally divergent eXtricating-loops with an aperturedguide-block moving on the ends of said loops, a cross-piece secured tothe said loop ends, and an operatingrod passing ating-rod passingthrough said cross-piece and retaining-plate and secured to saidguideblock, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, atMendota, in the county of La Salle and State of Illinois, in thepresence of two Witnesses.

ARTHUR P. SHEARBURN.

Witnesses:

J. A. LAMBERTON, H. O. WVHEELER.

